<template>
	<view>
		<!-- <my-search @click="gotoSearch" :bgColor="'pink'" :radius="2"></my-search> -->
		<my-search @click="gotoSearch" ></my-search>
		<view class="scroll-view-container">
			<!-- 左侧内容区域 -->
			<scroll-view scroll-y :style="{height: wh + 'px'}" class="left-scroll-view">
				<block v-for="(item,i) in cateList" :key="i">
					<view 
					:class="['left-scroll-view-item', active == i ? 'active' : '']"
					@click="activeChanged(i)"
					>{{item.cat_name}}</view>
				</block>
			</scroll-view>
			
			<!-- 右侧内容区域 -->
			<scroll-view scroll-y :style="{height: wh + 'px'}" :scroll-top="scrollTop" class="right-scroll-view">
				
				<view v-for="(item2, i2) in cateleve1" :key="i2">
					<view class="cate-title" >
						/{{item2.cat_name}}/
					</view>
					
					<view class="cate-lv3" >
						<view class="cate-lv3-item" v-for="(item3, i3) in item2.children" @click="gotoGoodsList(item3)">
							<image :src="item3.cat_icon" mode=""></image>
							<text>{{item3.cat_name}}</text>
						</view>
					</view>	
				</view>
			</scroll-view>
		</view>
	</view>
</template>

<script>
import badge from '@/mixins/tabbarBadge.js'
	export default {
		mixins: [badge],
		data() {
			return {
				wh: 0,
				cateList: [],
				active: 0,
				cateleve1: [],
				scrollTop: 0
			};
		},
		onLoad() {
			const sysInfo = uni.getSystemInfoSync()
			this.wh = sysInfo.windowHeight - 50
			
			this.getCateList()
		},
		
		methods: {
			async getCateList () {
				const {data: res} = await uni.$http.get("/api/public/v1/categories")
				if (res.meta.status !== 200) return uni.$showMsg()
				
				this.cateList = res.message
				
				// 右侧区域的一级列表
				this.cateleve1 = res.message[0].children
			},
			activeChanged (i) {
				this.active = i
				this.cateleve1 = this.cateList[i].children
				
				this.scrollTop = this.scrollTop === 0 ? 0.1 : 0 
			},
			
			// 跳转goods_list页
			gotoGoodsList (item) {
				uni.navigateTo({
					url: '/subpkg/goods_list/goods_list?cid=' + item.cat_id
				})
			},
			
			// 跳转搜索页
			gotoSearch () {
				uni.navigateTo({
					url: '/subpkg/search/search'
				})
			}
		}
	}
</script>

<style lang="scss">
	.scroll-view-container {
		display: flex;
		.left-scroll-view {
			width: 120px;
			.left-scroll-view-item{
				background: #f7f7f7;
				line-height: 60px;
				text-align: center;
				font-size: 12px;
				position: relative;
				&.active {
					background: #ffffff;
					&::before {
						content: ' ';
						display: block;
						width: 3px;
						height: 30px;
						position: absolute;
						top: 50%;
						left: 0;
						transform: translateY(-50%);
						background-color: #c00000;
					}
				}
				
			}
		}
		
	}
	.right-scroll-view {
		background-color: #ffffff;
		.cate-title {
			font-size: 12px;
			text-align: center;
			padding: 15px 0;
			font-weight: bold;
		}
		.cate-lv3 {
			display: flex;
			flex-wrap: wrap;
			.cate-lv3-item {
				width: 33.33%;
				display: flex;
				flex-direction: column;
				justify-content: center;
				align-items: center;
				margin-bottom: 10px;
				image {
					width: 60px;
					height: 60px;
				}
				text {
					font-size: 12px;
				}
			}
		}
		
	}
	
	
</style>
